Ron,

I purchased one and flew with it last year. (Nampa, ID; Mackay, ID; King
Mountain Glider Park; and, Logan, UT) It is easy to use and definitely uses
less O2 then the flow/oximizer it replaced. I hang mine from a hook mounted
on the left side of my cockpit. It is a good solution for your Eastern
Washington 02 needs.

However, nothing is as easy to use, or uses less O2 then the Mountain High
EDS system. If you can't afford an EDS system the DDO2 is a good second
choice.

Wayne
HP-14 "6F"
http://tinyurl.com/N990-6F


"Ron Clark" wrote in message
...

I am considering the Aerox DDO2 mechanical diluter demand system. I
only occasionally use supplemental O2, mainly for the a few trips
each season to fly on the east side of the Cascade mountains in
Washington state. I am currently using a Aerox regulator with a
needle valve, and an Oxymiser cannula. Since there are no filling
facilities where I fly I am hoping to get a little more mileage out of
my tank. Could somebody out there provide some feedback on the DDO2
regulator? Is it a good option for the occasional O2 user? Does it
provide a significant reduction in the amount of oxygen required? Is
it easy to use? I don't care for the " string around the neck"
option. Has anybody mounted it to the interior of their cockpit? Any
other information would be appreciated.

Ron Clark